Crossword Genius

Digital appliance fine (all I need to change) (4,4)

Ross

I think it could be either:

Which length description are you looking for?:

8

4,4

nailfile

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'digital appliance' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I don't see?

'fine all i need to change' is the wordplay.
'need to change' is an anagram indicator (I've seen 'needs to change' mean this).
'fine'+'all'+'i'='finealli'
'finealli' anagrammed gives 'NAILFILE'.

Can you help me to learn more?

(Other definitions for nailfile that I've seen before include "Manicurist's tool" , "Manicure item" .)

I've seen this clue in The Guardian.
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